71224055740487 has 16 divisors (see below), whose sum is σ = 79177494536448. Its totient is φ = 63624160938240.

The previous prime is 71224055740477. The next prime is 71224055740493. The reversal of 71224055740487 is 78404755042217.

It is a cyclic number.

It is not a de Polignac number, because 71224055740487 - 2¹² = 71224055736391 is a prime.

It is a super-2 number, since 2×71224055740487² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71224055740477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146801633 + ... + 147286005.

It is an arithmetic number, because the mean of its divisors is an integer number (4948593408528).

Almost surely, 2^{71224055740487} is an apocalyptic number.

71224055740487 is a deficient number, since it is larger than the sum of its proper divisors (7953438795961).

71224055740487 is a wasteful number, since it uses less digits than its factorization.

71224055740487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849290.

The product of its (nonzero) digits is 17561600, while the sum is 56.

The spelling of 71224055740487 in words is "seventy-one trillion, two hundred twenty-four billion, fifty-five million, seven hundred forty thousand, four hundred eighty-seven".